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508 - Type of engine Yanmar 80hp? |
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Christian K 
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Joined: 03 December 2020 Location: Germany Status: Offline Points: 16 |
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 Topic: 508 - Type of engine Yanmar 80hp?Posted: 07 March 2021 at 13:05 |
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Dear 508 owners, we ordered a new 508 for march 2022 and looking forward to the delivery. What exactly type of Yanmar 80HP engine will be delivered? We dinīt found any clear specification in the order oder specification from HANSE. Only "approx. 80 HP" At Yanmar website we found 4JH80. Will this be the current modell?  And what fuel consumption do you have in normal conditions approx 7 kn SOG? We found that figure at Yanmar for the 4JH80:  Fair winds, Christian
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HANSE 508 #88
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ohthetrees
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Joined: 24 November 2019 Status: Offline Points: 189 |
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Posted: 14 March 2021 at 18:32 |
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Assuming a relatively modern engine, I believe fuel economy will depend on the full system, and the engine may be the smaller part of that equation. Hull, top-sides wind resistance, propeller, how clean the bottom, and engine all play a roll. On our 505, with a volvo D275, we get ~3.4 liters/hr at 6 kn, and about ~4.25 liters/hr at 7kn. This is real world cruising conditions, which are sometimes not very nice.
As an aside, I wish we had a smaller engine, with no turbo. We can exceed 9kn with our D2-75 75hp Volvo. We cruise long distances, and running fast enough to keep the turbo spun up and carbon deposits down is too fast and too much fuel. To run at preferred speed of 6.5kn, we must run at around 1700rpm, which is lower than Volvo recommends for cruising. At 2000 rpm, engine is happy, but we are going 7.5kn and using a lot more fuel. Even going into a chop, and 30kn of wind, 2000 rpm is enough power for us. We never use the full power, which is 2700rpm, and 9kn, except when we are testing, or trying to burn away the carbon. I think our boat would perform perfectly, even in adverse wind and chop with the non turbo D2-55. With that would come lower initial cost, lower maintenance (no turbo), and run at more optimum load, hence less carbon problems. I don't know if your 508 came with engine choice, but I would definitely select a smaller engine if available.
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Christian K
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Joined: 03 December 2020 Location: Germany Status: Offline Points: 16 |
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Posted: 25 March 2021 at 19:54 |
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Thanks a lot! Very intresting. The consumption is very high. I thought bigger engine is better. But we havenīt a choice. Meanwhile we know the 508 will come with the 80 HP Yanmar turbo. THanks again and fair winds Christian
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HANSE 508 #88
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Jegenia
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Joined: 05 September 2024 Status: Offline Points: 4 |
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Posted: 13 September 2024 at 16:52 |
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Hi Christian,
I just order #121 of the 508 and was wandering on your first question. Did you have a chance to find out the fuel efficiency of the 508 80hp engine? Thanks Armand
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S&J
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Joined: 30 August 2014 Location: Perth WA / Med Status: Offline Points: 1371 |
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Posted: 14 September 2024 at 12:05 |
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I don't think the 80hp engine is required for my 458 where it is an option. I have the 57hp which is the same engine without a turbo.
The turbo has several disadvantages including high revs required and consequently higher fuel consumption. Over 4 seasons (550 hours) I have averaged 2.5l/h. I use the motor on passage reluctantly and generally not more than 1,800rpm which gives 6kts. In more challenging conditions the consumption goes up to 3-4l/h but this is balanced by the majority of our use which is low speed manoeuvring at the start and end of a passage.
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H458 #159 Primal Mediterranean cruising
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mr-ludi
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Joined: 25 September 2022 Status: Offline Points: 152 |
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Posted: 15 September 2024 at 11:56 |
Totally not. The 4JH57 got 2.190ccm and the 4JH80 got 2.000ccm.
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S&J
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Joined: 30 August 2014 Location: Perth WA / Med Status: Offline Points: 1371 |
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Posted: 15 September 2024 at 17:36 |
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Interesting. They have the same bore and stroke (88 mm x 90 mm). I always thought that the capacity was calculated from this.
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H458 #159 Primal Mediterranean cruising
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High Time
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Joined: 04 September 2012 Location: Portsmouth UK Status: Offline Points: 819 |
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Posted: 16 September 2024 at 16:11 |
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Yes - curious. 88 x 90 gives a capcity of 2189cc.
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Roger
High Time (415 #038) |
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mr-ludi
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Joined: 25 September 2022 Status: Offline Points: 152 |
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Posted: 16 September 2024 at 16:31 |
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In my manual the 4JH57 got 88x90 and 4JH80 got 84x90.
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Wild
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Joined: 18 March 2010 Location: Turkey-Greece Status: Offline Points: 937 |
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Posted: 18 September 2024 at 13:43 |
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The 4JH57 2,19 L 3000RPM common rail non turbo charged
THE 4JH80 2,00 L 3200RPM common rail turbo charged
Edited by Wild - 18 September 2024 at 13:43 |
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Wild and Wet
Belgium 545e#268 |
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S&J wrote: